Motor Thermistor Interface; Connection Diagram - Mitsubishi Electric FR-A7AZ Instruction Manual

6

MOTOR THERMISTOR INTERFACE

A vector-controlled motor with thermistor (SF-V5RU
motor-side thermistor and sends the detected temperature to the inverter as a feedback. This operation
reduces fluctuation of the generated torque due to temperature changes. The detected motor temperature
can be output as an output signal (Y55 signal) or be displayed on the monitor.
(The motor temperature detection signal (Y55) and the motor temperature monitor output are available in
the FR-A700 series inverters manufactured in December 2010 or later. For how to find the SERIAL
number, refer to page 4.)
Torque accuracy is ±3%.
6.1

Connection diagram

Three-phase
AC power supply
* When calibrating the thermistor, change the thermistor calibration status switch. (Refer to page 34.)
CAUTION
⋅ To detect temperature with FR-A7AZ, be sure to use the SF-V5RU
thermistor.
30
MCCB MC
T/A) detects the motor temperature with the
Inverter
U
R/L1
V
S/L2
W
T/L3
FR-A7AZ
TH1
TH2
Shielded twisted pair cable
*
SW2
T/A, a dedicated motor with
Motor
IM
Thermistor